EP1318641A3 - Carrier recovery with antenna diversity - Google Patents

Carrier recovery with antenna diversity Download PDF

Info

Publication number
EP1318641A3
EP1318641A3 EP02257976A EP02257976A EP1318641A3 EP 1318641 A3 EP1318641 A3 EP 1318641A3 EP 02257976 A EP02257976 A EP 02257976A EP 02257976 A EP02257976 A EP 02257976A EP 1318641 A3 EP1318641 A3 EP 1318641A3
Authority
EP
European Patent Office
Prior art keywords
power
phase
carrier recovery
antenna diversity
switches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02257976A
Other languages
German (de)
French (fr)
Other versions
EP1318641A2 (en
Inventor
Yukio c/o Alps Electric Co. Ltd. Ohtaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2001376088A external-priority patent/JP2003179530A/en
Priority claimed from JP2001376091A external-priority patent/JP2003179531A/en
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of EP1318641A2 publication Critical patent/EP1318641A2/en
Publication of EP1318641A3 publication Critical patent/EP1318641A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/084—Equal gain combining, only phase adjustments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0028—Correction of carrier offset at passband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0055—Closed loops single phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0071—Control of loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

A receiver has an adder (4) for output intermediate-frequency signals from a plurality of receiving blocks, a demodulator (5), adjustable reference-signal generator (8) for supplying phase-shifted reference signals to PLL circuits (19,25,31) of the plurality of receiving blocks, and a plurality of switches (12,13,14). The switches are controlled such that, when power is turned on, the frequency-divided reference signals to the PLL circuits are in phase with one another. The adjustable reference-signal generator, upon tuning on power, is set to the phase-shift stored immediately before the power was turned off.
EP02257976A 2001-12-10 2002-11-19 Carrier recovery with antenna diversity Withdrawn EP1318641A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001376088 2001-12-10
JP2001376088A JP2003179530A (en) 2001-12-10 2001-12-10 Receiver device
JP2001376091 2001-12-10
JP2001376091A JP2003179531A (en) 2001-12-10 2001-12-10 Ofdm signal receiver

Publications (2)

Publication Number Publication Date
EP1318641A2 EP1318641A2 (en) 2003-06-11
EP1318641A3 true EP1318641A3 (en) 2006-10-04

Family

ID=26624968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02257976A Withdrawn EP1318641A3 (en) 2001-12-10 2002-11-19 Carrier recovery with antenna diversity

Country Status (2)

Country Link
US (1) US6959175B2 (en)
EP (1) EP1318641A3 (en)

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JP3818624B2 (en) * 2000-02-23 2006-09-06 株式会社ルネサステクノロジ Wireless communication system
JP2005130279A (en) * 2003-10-24 2005-05-19 Sharp Corp Tuner for diversity reception
JP4102375B2 (en) * 2004-03-25 2008-06-18 松下電器産業株式会社 Wireless transmission device and wireless reception device
DE602004004503D1 (en) * 2004-04-02 2007-03-15 Suisse Electronique Microtech RF multi-band receiver with device for reducing energy consumption
JP4059227B2 (en) * 2004-05-21 2008-03-12 ソニー株式会社 Demodulator
JP2006033407A (en) * 2004-07-15 2006-02-02 Honda Motor Co Ltd Antenna device for receiving digital broadcasting, and mobile body mounting same thereon
JP4455973B2 (en) * 2004-10-08 2010-04-21 Ｏｋｉセミコンダクタ株式会社 Data receiving apparatus and threshold value determining method
JP4063824B2 (en) * 2005-01-12 2008-03-19 埼玉日本電気株式会社 Wireless communication device
US20060178126A1 (en) * 2005-02-04 2006-08-10 Thompson Charles D Diversity receiver system having a shared local oscillator source
EP1911159A1 (en) * 2005-08-02 2008-04-16 R.F. Magic Inc. Multiple frequency source system and method of operation
US7991348B2 (en) 2005-10-12 2011-08-02 The Directv Group, Inc. Triple band combining approach to satellite signal distribution
US9282299B2 (en) * 2005-10-12 2016-03-08 The Directv Group, Inc. Single local oscillator sharing in multi-band Ka-band LNBS
CN101479884A (en) * 2006-01-24 2009-07-08 新加坡科技研究局 A receiver arrangement and a transmitter arrangement
KR100819390B1 (en) * 2006-09-21 2008-04-04 지씨티 세미컨덕터 인코포레이티드 Frequency synthesizer using two phase locked loop
AU2008260449A1 (en) 2007-06-01 2008-12-11 Nextivity, Inc. Short range booster and methods for boosting with multiple antennas
US8027279B2 (en) * 2007-09-17 2011-09-27 Lantiq Deutschland Gmbh Echo cancellation
WO2009060526A1 (en) * 2007-11-08 2009-05-14 Fujitsu Limited Coherent optical receiver
EP2443766A1 (en) * 2009-06-15 2012-04-25 Agc Automotive Americas R&D, Inc. Antenna system and method for optimizing an rf signal
US9144012B2 (en) * 2010-09-23 2015-09-22 Samsung Electronics Co., Ltd. Method and system of MIMO and beamforming transmitter and receiver architecture
WO2012144205A1 (en) * 2011-04-19 2012-10-26 パナソニック株式会社 Signal generating method and signal generating device
US8670322B2 (en) * 2011-06-06 2014-03-11 Wilocity, Ltd. Single transmission line for connecting radio frequency modules in an electronic device
US8463224B2 (en) * 2011-10-12 2013-06-11 Tektronix, Inc. Arbitrary multiband overlay mixer apparatus and method for bandwidth multiplication
KR20130073131A (en) * 2011-12-23 2013-07-03 삼성전자주식회사 Beamforming apparatus and method in mobile communication system
US8817936B2 (en) * 2012-05-23 2014-08-26 The Boeing Company Multiple synchronous IQ demodulators
JP6490047B2 (en) 2013-03-15 2019-03-27 エージーシー オートモーティヴ アメリカズ アールアンドディー，インコーポレイテッド Window assembly with a transparent region having a property enhancing slit
US10094855B1 (en) * 2013-06-24 2018-10-09 Peter Fuhr Frequency visualization apparatus and method
US10243263B2 (en) * 2014-04-30 2019-03-26 Commscope Technologies Llc Antenna array with integrated filters
JP6325958B2 (en) * 2014-10-03 2018-05-16 パナソニック株式会社 Diversity receiver
US9509396B2 (en) * 2014-11-04 2016-11-29 Entropic Communications, Llc Systems and methods for shared analog-to-digital conversion in a communication system
WO2021061297A1 (en) * 2019-09-27 2021-04-01 Commscope Technologies Llc Digital phase shifters having multi-throw radio frequency switches and related methods of operation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546806A1 (en) * 1991-12-11 1993-06-16 Nokia Mobile Phones Ltd. A method for space diversity reception
JPH0918916A (en) * 1995-06-28 1997-01-17 Canon Inc Radio exchange system
EP0957532A2 (en) * 1998-05-14 1999-11-17 Kabushiki Kaisha Toshiba Multiple frequency band antenna
DE19925868A1 (en) * 1999-06-07 2001-01-11 Temic Telefunken Hochfrequenzt Diversity TV reception system generates separate control signals using phase error between individual and combined output signals, controls signal phase of each auxiliary receiver signal
EP1274210A1 (en) * 2001-07-05 2003-01-08 Alps Electric Co., Ltd. OFDM receiver

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US4079318A (en) * 1975-06-23 1978-03-14 Nippon Electric Company, Ltd. Space diversity receiving system with phase-controlled signal combining at intermediate frequency stage
JPS5919652B2 (en) * 1979-06-02 1984-05-08 郵政省電波研究所長 Coherent frequency diversity reception method
US5175729A (en) * 1991-06-05 1992-12-29 Motorola, Inc. Radio with fast lock phase-locked loop
US5748683A (en) * 1994-12-29 1998-05-05 Motorola, Inc. Multi-channel transceiver having an adaptive antenna array and method
JPH1070497A (en) * 1996-08-27 1998-03-10 Saitama Nippon Denki Kk Method for synthesizing reception signal from diversity system radio equipment
JPH10303747A (en) * 1997-04-25 1998-11-13 Matsushita Electric Ind Co Ltd Pll frequency synthesizer for plural frequency bands
JP2000236206A (en) 1998-12-17 2000-08-29 Ntt Docomo Inc High-sensitivity radio receiver
US6157260A (en) * 1999-03-02 2000-12-05 Motorola, Inc. Method and apparatus for calibrating a local oscillator in a direct conversion receiver
US6933788B2 (en) * 2001-05-16 2005-08-23 Kyocera Wireless Corp. Reference oscillator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546806A1 (en) * 1991-12-11 1993-06-16 Nokia Mobile Phones Ltd. A method for space diversity reception
JPH0918916A (en) * 1995-06-28 1997-01-17 Canon Inc Radio exchange system
EP0957532A2 (en) * 1998-05-14 1999-11-17 Kabushiki Kaisha Toshiba Multiple frequency band antenna
DE19925868A1 (en) * 1999-06-07 2001-01-11 Temic Telefunken Hochfrequenzt Diversity TV reception system generates separate control signals using phase error between individual and combined output signals, controls signal phase of each auxiliary receiver signal
EP1274210A1 (en) * 2001-07-05 2003-01-08 Alps Electric Co., Ltd. OFDM receiver

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05 30 May 1997 (1997-05-30) *

Also Published As

Publication number Publication date
US20030109242A1 (en) 2003-06-12
US6959175B2 (en) 2005-10-25
EP1318641A2 (en) 2003-06-11

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